VirtualBox - Windows XP hangs

Description

Hello

I have installed VirtualBox OSE few days ago. I have installed Windows XP as a virtual machine and using Kubuntu as host machine.

When I operate in Windows XP from VirtualBox, it seems to sleep for few seconds (the whole thing, mouse, keyboard and all). When I press (Right Ctrl), go to host (kubuntu) and come back to Windwos again it works. Again after few seconds it sleeps. If I press Windows Key it awakes.

Additionally, When I am running Windows XP inside VB, My host machine hangs too for some time otherwise it won't